15th International Solving Contest (ISC) - Sunday, 27th January 2019

Problems and Solutions - Category 1

1
#2
Raymond Gevers
1.HM Good Companion Folder, 1918

1.Sf5! [5,0]
2
#3
Joe Bunting
To Alain White, 1945

1.Kc7! > 2.Rxd4 @
1...Qxb5 2.Bxb5 @
1...Rd3 2.Bd5 @
1...Rch3 2.Sxd4 @
1...d3 2.Qg1+ @
1...exd6 2.Sd7+ @

@= 1,0/2,0/2,5/3,0/4,0/5,0
3
+
Jindrich Fritz
Shakhmaty v SSSR, 1963

1.Se1+ Re4 2.Sg3+ [1,0]
2... Ke5 3.e7 [1,5]
3... Sxe7 4.Sf3+ Kf4 5.Sxh4 Kg4 6.Ke3 [1,0]
6... Kxh4 7.Sf5+ [1,5]
7... Sxf5+ 8.Kf4 Sd4 9.Bg3#

* 1...Kg4 2.Sf2+ Kg5 3.e7 Sxe7 4.Sf3+
* 2...Kf4 3.Sd3+ Kg5 4.Sxf5 Kxf5 5.e7 Re4 6.Se5
* 3.Sf3+? Kxe6! 4.Sxf5 Ra4!
4
H#4 2 sol.
Dieter Müller & Rolf Wiehagen
1st Pr. Problem Echo (12th TT), 1995

1.Bf4 g4 2.Kd6 Sc8+ 3.Ke5 Sxe7 4.d6 Sc6# [2,5]
1.Rf5 Sxd7 2.Kd5 Sb8 3.Ke5 g3 4.Sd5 Sc6# [2,5]
5
#8
Dieter Werner
2nd Pr. Schach-Aktiv, 1994

1.Bh4! f6 2.Bxf6 [3.Be7#] e4 3.Bh4 Sc4/Sd3 4.Bg3+ Se5 5.Rb7 Bc7 6.Rxc7 c5 7.Rb7 [5,0]

* 2...Bf7(?) 2.Kxf7 Rf1 3.Ke8 (#6)
6
S#3
Volker Gülke
3rd Pr. Die Schwalbe, 2007

1.Se3! > 2.Bf6+ Kf4 3.b8Q+/b8B+ (Rd6#) @
1...Kxe3 2.Bd6+ Be4 3.Bxc5+ (Rd4#) @
1...B~ 2.Bf4+ Kf3 3.Qc6+ (Rd5#) @
1...Bg4 2.Bd4+ Be6 3.Bd3+ (Rxd3#) @

@= 1,0/2,5/4,0/5,0
7
#2
Efim Rukhlis
Československý šach, 1976

1.Bg7! [5,0]

*1.Rc3? Rd1!; 1.Re3? Qc7!; 1.Qh4? Rd4!; 1.Rc7? Rd6!; 1.Re7? Qc3!
8
#3
Otokar Votruba
4th HM
British Chess Federation, 1936


1.Sd4! > 2.Se6+ @
1...Rdxd4 2.Qxh6+ @
1...Rdxe5 2.Rf3+ @
1...Rexe5 2.Rf3+ @
1...Rexd4 2.Qf8+ @
1...Re3 2.Qxh6+ @
1...Kxe5 2.Qxg7+ @

@= 1,0/1,5/2,0/3,0/3,5/4,0/5,0
9
=
Martin Minski & Helmut Waelzel
Original for Schach, 2019

1.Ke4 h3 2.Kf3 [1,0]
2... Bc5 3.Sd6 [1,5]
3...Bxd6 4.a7 e4+ 5.Kg4 [1,0]
5...h2 6.a8Q h1Q 7.Qh8+ [1,5]
7...Qxh8 stalemate

also allowed:
1. Ke4 Bc5 2. Kf3 h3 3. Sd6 and 1. Ke4 Bc5 2. Sd6 h3 3. Kf3

* 1.Sd6? h3! 2.Se4+ Kf5!-+
* 2.Kxe3? h2 3.a7 h1Q-+
* 2...e4+ 3.Kx3! (3.g3? Bc5!-+) 3...h2 4.a7 h1Q 5.a8Q=
* 3.Kg3? e4! 4.Kxh3 e3 5.Sd6 (5.Kg3 e2-+) 5...e2!-+
* 5.Kxe4? h2 6.a8Q h1Q+ -+ skewer; 5.Kf2? Bc5+ 6.Kg3 Bxa7-+; 5.Ke2 h2 6.a8Q h1Q 7.Qd8+ Be7-+
* 7.Qd8+? Be7-+
* Ideal stalemate, after a game A. Alavkin - E. Sapunov, 53rd RUS-ch Samara 2000.
10
H#3 3 sol.
Christopher Jones
Original for ISC, 2019

1.Bxb2 Rh7 2.Kf4 Rxf7+ 3.Kxe5 f4# @
1.Qd1 Sa6 2.Rd2 Rxe4+ 3.Kd3 Sb4# @
1.Qd5 fxe4 2.Kd4 exd5+ 3.Kxc5 b4# @

@= 2,0/3,5/5,0
11
#4
Herbert Kromath
Die Schwalbe, 2013

1.Ree5! > 2.Rd5+ Qxd5 3.Rxd5+ [2,0]
1...fxe5 2.Rxf7 (> 3.Sf5+) [1,5]
2...e4 3.Rf5 [1,5]
12
S#5
Venelin Alaikov
2nd Pr. Thema Danicum, 1998

1.Bc8! > 2.Rd8+ Kc6 3.Bd7+ Kd5 4.Bg4+ Kc6 5.Bxf3+ (Bxf3#) @
1...f5 2.Rh6+ Kd5 3.Sf6+ Kc6 4.Se4+ Kd5 5.Sc3+ (Sxc3#) @
1...Sxc2 2.Ra6+ Kd5 3.Sb6+ Kc6 4.Sc4+ Kd5 5.Sxe3+ (Sxe3#) @

@= 2,0/3,5/5,0